show_ident_date: fix tz range check
[git/git.git] / git-compat-util.h
CommitLineData
4050c0df
JH
1#ifndef GIT_COMPAT_UTIL_H
2#define GIT_COMPAT_UTIL_H
3
b97e9116
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4#define _FILE_OFFSET_BITS 64
5
8f1d2e6f 6#ifndef FLEX_ARRAY
8e973991
JH
7/*
8 * See if our compiler is known to support flexible array members.
9 */
203ee91f 10#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && (!defined(__SUNPRO_C) || (__SUNPRO_C > 0x580))
8e973991
JH
11# define FLEX_ARRAY /* empty */
12#elif defined(__GNUC__)
13# if (__GNUC__ >= 3)
14# define FLEX_ARRAY /* empty */
15# else
16# define FLEX_ARRAY 0 /* older GNU extension */
17# endif
18#endif
19
20/*
21 * Otherwise, default to safer but a bit wasteful traditional style
22 */
23#ifndef FLEX_ARRAY
24# define FLEX_ARRAY 1
8f1d2e6f
JH
25#endif
26#endif
27
b4f2a6ac 28#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
f630cfda 29#define bitsizeof(x) (CHAR_BIT * sizeof(x))
b4f2a6ac 30
c03c8315
EFL
31#define maximum_signed_value_of_type(a) \
32 (INTMAX_MAX >> (bitsizeof(intmax_t) - bitsizeof(a)))
33
1368f650
JN
34#define maximum_unsigned_value_of_type(a) \
35 (UINTMAX_MAX >> (bitsizeof(uintmax_t) - bitsizeof(a)))
36
c03c8315
EFL
37/*
38 * Signed integer overflow is undefined in C, so here's a helper macro
39 * to detect if the sum of two integers will overflow.
40 *
41 * Requires: a >= 0, typeof(a) equals typeof(b)
42 */
43#define signed_add_overflows(a, b) \
44 ((b) > maximum_signed_value_of_type(a) - (a))
45
1368f650
JN
46#define unsigned_add_overflows(a, b) \
47 ((b) > maximum_unsigned_value_of_type(a) - (a))
48
8723f216
NP
49#ifdef __GNUC__
50#define TYPEOF(x) (__typeof__(x))
51#else
52#define TYPEOF(x)
53#endif
54
f630cfda 55#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (bitsizeof(x) - (bits))))
db7244bd 56#define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */
8723f216 57
98cb6f30
PH
58#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
59
cf606e3d
AW
60/* Approximation of the length of the decimal representation of this type. */
61#define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
62
4cb18a49
BC
63#if defined(__sun__)
64 /*
65 * On Solaris, when _XOPEN_EXTENDED is set, its header file
66 * forces the programs to be XPG4v2, defeating any _XOPEN_SOURCE
67 * setting to say we are XPG5 or XPG6. Also on Solaris,
68 * XPG6 programs must be compiled with a c99 compiler, while
69 * non XPG6 programs must be compiled with a pre-c99 compiler.
70 */
71# if __STDC_VERSION__ - 0 >= 199901L
72# define _XOPEN_SOURCE 600
73# else
74# define _XOPEN_SOURCE 500
75# endif
6555b196 76#elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && \
6c109904 77 !defined(_M_UNIX) && !defined(__sgi) && !defined(__DragonFly__) && \
40036bed 78 !defined(__TANDEM) && !defined(__QNX__)
85023577
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79#define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */
80#define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
c902c9a6 81#endif
fb952206
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82#define _ALL_SOURCE 1
83#define _GNU_SOURCE 1
84#define _BSD_SOURCE 1
9a695fbf 85#define _NETBSD_SOURCE 1
9398b859 86#define _SGI_SOURCE 1
85023577 87
435bdf8c
MSO
88#ifdef WIN32 /* Both MinGW and MSVC */
89#define WIN32_LEAN_AND_MEAN /* stops windows.h including winsock.h */
90#include <winsock2.h>
91#include <windows.h>
92#endif
93
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94#include <unistd.h>
95#include <stdio.h>
96#include <sys/stat.h>
97#include <fcntl.h>
98#include <stddef.h>
99#include <stdlib.h>
100#include <stdarg.h>
101#include <string.h>
b3e103da 102#ifdef HAVE_STRINGS_H
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103#include <strings.h> /* for strcasecmp() */
104#endif
4050c0df
JH
105#include <errno.h>
106#include <limits.h>
b2d05e06 107#ifdef NEEDS_SYS_PARAM_H
4050c0df 108#include <sys/param.h>
6ede7205 109#endif
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JH
110#include <sys/types.h>
111#include <dirent.h>
85023577
JH
112#include <sys/time.h>
113#include <time.h>
114#include <signal.h>
cebcab18 115#ifndef USE_WILDMATCH
85023577 116#include <fnmatch.h>
cebcab18 117#endif
f4626df5
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118#include <assert.h>
119#include <regex.h>
120#include <utime.h>
088d8802 121#include <syslog.h>
2844923d 122#ifndef NO_SYS_POLL_H
fdc12114 123#include <sys/poll.h>
2844923d
MD
124#else
125#include <poll.h>
126#endif
cfc755d3
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127#if defined(__MINGW32__)
128/* pull in Windows compatibility stuff */
129#include "compat/mingw.h"
130#elif defined(_MSC_VER)
131#include "compat/msvc.h"
132#else
f4626df5 133#include <sys/wait.h>
ebae9ff9 134#include <sys/resource.h>
85023577 135#include <sys/socket.h>
80bbe72b 136#include <sys/ioctl.h>
eb80042c 137#include <termios.h>
2600973f 138#ifndef NO_SYS_SELECT_H
80bbe72b 139#include <sys/select.h>
2600973f 140#endif
85023577
JH
141#include <netinet/in.h>
142#include <netinet/tcp.h>
143#include <arpa/inet.h>
144#include <netdb.h>
145#include <pwd.h>
e2770979 146#include <sys/un.h>
2844923d 147#ifndef NO_INTTYPES_H
007e2ba6 148#include <inttypes.h>
2844923d
MD
149#else
150#include <stdint.h>
151#endif
6c109904
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152#ifdef NO_INTPTR_T
153/*
154 * On I16LP32, ILP32 and LP64 "long" is the save bet, however
155 * on LLP86, IL33LLP64 and P64 it needs to be "long long",
156 * while on IP16 and IP16L32 it is "int" (resp. "short")
157 * Size needs to match (or exceed) 'sizeof(void *)'.
158 * We can't take "long long" here as not everybody has it.
159 */
160typedef long intptr_t;
161typedef unsigned long uintptr_t;
162#endif
41b20017
RJ
163#if defined(__CYGWIN__)
164#undef _XOPEN_SOURCE
165#include <grp.h>
166#define _XOPEN_SOURCE 600
adbc0b6b 167#include "compat/cygwin.h"
41b20017 168#else
fb952206 169#undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */
85023577 170#include <grp.h>
fb952206 171#define _ALL_SOURCE 1
41b20017 172#endif
d75f8e61 173#endif
85023577 174
76759c7d
TB
175/* used on Mac OS X */
176#ifdef PRECOMPOSE_UNICODE
177#include "compat/precompose_utf8.h"
178#else
179#define precompose_str(in,i_nfd2nfc)
180#define precompose_argv(c,v)
181#define probe_utf8_pathname_composition(a,b)
182#endif
183
0539ecfd
JS
184#ifdef MKDIR_WO_TRAILING_SLASH
185#define mkdir(a,b) compat_mkdir_wo_trailing_slash((a),(b))
186extern int compat_mkdir_wo_trailing_slash(const char*, mode_t);
187#endif
188
7f9e848c
JS
189#ifdef NO_STRUCT_ITIMERVAL
190struct itimerval {
191 struct timeval it_interval;
192 struct timeval it_value;
193}
194#endif
195
196#ifdef NO_SETITIMER
197#define setitimer(which,value,ovalue)
198#endif
199
e1c06886
DA
200#ifndef NO_LIBGEN_H
201#include <libgen.h>
202#else
203#define basename gitbasename
204extern char *gitbasename(char *);
205#endif
206
85023577
JH
207#ifndef NO_ICONV
208#include <iconv.h>
209#endif
4050c0df 210
684ec6c6
RS
211#ifndef NO_OPENSSL
212#include <openssl/ssl.h>
213#include <openssl/err.h>
214#endif
215
3b130ade
DM
216/* On most systems <netdb.h> would have given us this, but
217 * not on some systems (e.g. z/OS).
218 */
219#ifndef NI_MAXHOST
220#define NI_MAXHOST 1025
221#endif
222
223#ifndef NI_MAXSERV
224#define NI_MAXSERV 32
225#endif
226
d0c2449f
JH
227/* On most systems <limits.h> would have given us this, but
228 * not on some systems (e.g. GNU/Hurd).
229 */
230#ifndef PATH_MAX
231#define PATH_MAX 4096
232#endif
233
c4001d92
SP
234#ifndef PRIuMAX
235#define PRIuMAX "llu"
236#endif
237
607bb3ff
JS
238#ifndef PRIu32
239#define PRIu32 "u"
240#endif
241
242#ifndef PRIx32
243#define PRIx32 "x"
244#endif
245
5418d96d
RJ
246#ifndef PRIo32
247#define PRIo32 "o"
248#endif
249
80ba074f
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250#ifndef PATH_SEP
251#define PATH_SEP ':'
252#endif
253
cb6a22c0
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254#ifdef HAVE_PATHS_H
255#include <paths.h>
256#endif
257#ifndef _PATH_DEFPATH
258#define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin"
259#endif
260
23326d14
JS
261#ifndef STRIP_EXTENSION
262#define STRIP_EXTENSION ""
263#endif
264
25fe217b
JS
265#ifndef has_dos_drive_prefix
266#define has_dos_drive_prefix(path) 0
267#endif
268
269#ifndef is_dir_sep
270#define is_dir_sep(c) ((c) == '/')
271#endif
272
d1c69255
TN
273#ifndef find_last_dir_sep
274#define find_last_dir_sep(path) strrchr(path, '/')
275#endif
276
e4ac953b 277#if defined(__HP_cc) && (__HP_cc >= 61000)
b6ab349b
MR
278#define NORETURN __attribute__((noreturn))
279#define NORETURN_PTR
6520c846 280#elif defined(__GNUC__) && !defined(NO_NORETURN)
4050c0df 281#define NORETURN __attribute__((__noreturn__))
18660bc9 282#define NORETURN_PTR __attribute__((__noreturn__))
aba7dea8
RJ
283#elif defined(_MSC_VER)
284#define NORETURN __declspec(noreturn)
285#define NORETURN_PTR
4050c0df
JH
286#else
287#define NORETURN
18660bc9 288#define NORETURN_PTR
4050c0df
JH
289#ifndef __attribute__
290#define __attribute__(x)
291#endif
292#endif
293
51ea5519
NP
294#include "compat/bswap.h"
295
cebcab18
NTND
296#ifdef USE_WILDMATCH
297#include "wildmatch.h"
298#define FNM_PATHNAME WM_PATHNAME
299#define FNM_CASEFOLD WM_CASEFOLD
300#define FNM_NOMATCH WM_NOMATCH
301static inline int fnmatch(const char *pattern, const char *string, int flags)
302{
303 return wildmatch(pattern, string, flags, NULL);
304}
305#endif
306
4050c0df 307/* General helper functions */
ebaa79f4 308extern void vreportf(const char *prefix, const char *err, va_list params);
3bc4181f 309extern void vwritef(int fd, const char *prefix, const char *err, va_list params);
a4f3131c 310extern NORETURN void usage(const char *err);
64b1cb74 311extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2)));
a4f3131c
EFL
312extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));
313extern NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
4050c0df 314extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
46efd2d9 315extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
4050c0df 316
e208f9cc
JK
317/*
318 * Let callers be aware of the constant return value; this can help
9798f7e5
MK
319 * gcc with -Wuninitialized analysis. We restrict this trick to gcc, though,
320 * because some compilers may not support variadic macros. Since we're only
321 * trying to help gcc, anyway, it's OK; other compilers will fall back to
322 * using the function as usual.
e208f9cc 323 */
5ded807f 324#if defined(__GNUC__) && ! defined(__clang__)
9798f7e5 325#define error(...) (error(__VA_ARGS__), -1)
e208f9cc
JK
326#endif
327
18660bc9 328extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params));
3bc4181f 329extern void set_error_routine(void (*routine)(const char *err, va_list params));
c19a490e 330extern void set_die_is_recursing_routine(int (*routine)(void));
39a3f5ea 331
698a68be 332extern int prefixcmp(const char *str, const char *prefix);
8cc5b290 333extern int suffixcmp(const char *str, const char *suffix);
698a68be 334
fbca5837
MV
335static inline const char *skip_prefix(const char *str, const char *prefix)
336{
337 size_t len = strlen(prefix);
338 return strncmp(str, prefix, len) ? NULL : str + len;
339}
340
b130a72b 341#if defined(NO_MMAP) || defined(USE_WIN32_MMAP)
4050c0df
JH
342
343#ifndef PROT_READ
344#define PROT_READ 1
345#define PROT_WRITE 2
346#define MAP_PRIVATE 1
4050c0df
JH
347#endif
348
d6779124
SP
349#define mmap git_mmap
350#define munmap git_munmap
351extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
352extern int git_munmap(void *start, size_t length);
4050c0df 353
b130a72b
JL
354#else /* NO_MMAP || USE_WIN32_MMAP */
355
356#include <sys/mman.h>
357
358#endif /* NO_MMAP || USE_WIN32_MMAP */
359
360#ifdef NO_MMAP
361
5faaf246 362/* This value must be multiple of (pagesize * 2) */
8c82534d
SP
363#define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024)
364
4050c0df
JH
365#else /* NO_MMAP */
366
5faaf246 367/* This value must be multiple of (pagesize * 2) */
22bac0ea
SP
368#define DEFAULT_PACKED_GIT_WINDOW_SIZE \
369 (sizeof(void*) >= 8 \
370 ? 1 * 1024 * 1024 * 1024 \
371 : 32 * 1024 * 1024)
4050c0df
JH
372
373#endif /* NO_MMAP */
374
fcf3a21a
GV
375#ifndef MAP_FAILED
376#define MAP_FAILED ((void *)-1)
377#endif
378
fdb2a2a6
JH
379#ifdef NO_ST_BLOCKS_IN_STRUCT_STAT
380#define on_disk_bytes(st) ((st).st_size)
381#else
382#define on_disk_bytes(st) ((st).st_blocks * 512)
383#endif
384
22bac0ea 385#define DEFAULT_PACKED_GIT_LIMIT \
ecaebf4a 386 ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256))
8c82534d 387
6900679c
SH
388#ifdef NO_PREAD
389#define pread git_pread
390extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset);
391#endif
14086b0a
SP
392/*
393 * Forward decl that will remind us if its twin in cache.h changes.
394 * This function is used in compat/pread.c. But we can't include
395 * cache.h there.
396 */
397extern ssize_t read_in_full(int fd, void *buf, size_t count);
6900679c 398
4050c0df
JH
399#ifdef NO_SETENV
400#define setenv gitsetenv
401extern int gitsetenv(const char *, const char *, int);
402#endif
403
ca5bb5d5
SP
404#ifdef NO_MKDTEMP
405#define mkdtemp gitmkdtemp
406extern char *gitmkdtemp(char *);
407#endif
408
0620b39b
DA
409#ifdef NO_MKSTEMPS
410#define mkstemps gitmkstemps
411extern int gitmkstemps(char *, int);
412#endif
413
731043fd
JR
414#ifdef NO_UNSETENV
415#define unsetenv gitunsetenv
416extern void gitunsetenv(const char *);
417#endif
418
4050c0df
JH
419#ifdef NO_STRCASESTR
420#define strcasestr gitstrcasestr
421extern char *gitstrcasestr(const char *haystack, const char *needle);
422#endif
423
817151e6
PE
424#ifdef NO_STRLCPY
425#define strlcpy gitstrlcpy
426extern size_t gitstrlcpy(char *, const char *, size_t);
427#endif
428
bc6b4f52
JR
429#ifdef NO_STRTOUMAX
430#define strtoumax gitstrtoumax
431extern uintmax_t gitstrtoumax(const char *, char **, int);
97000ba6
JS
432#define strtoimax gitstrtoimax
433extern intmax_t gitstrtoimax(const char *, char **, int);
bc6b4f52
JR
434#endif
435
fa0c87c3
AR
436#ifdef NO_HSTRERROR
437#define hstrerror githstrerror
438extern const char *githstrerror(int herror);
439#endif
440
b21b9f1d
RS
441#ifdef NO_MEMMEM
442#define memmem gitmemmem
443void *gitmemmem(const void *haystack, size_t haystacklen,
444 const void *needle, size_t needlelen);
445#endif
446
40036bed
MK
447#ifdef NO_GETPAGESIZE
448#define getpagesize() sysconf(_SC_PAGESIZE)
449#endif
450
cba22528 451#ifdef FREAD_READS_DIRECTORIES
c5445fe0
JS
452#ifdef fopen
453#undef fopen
454#endif
cba22528
BC
455#define fopen(a,b) git_fopen(a,b)
456extern FILE *git_fopen(const char*, const char*);
457#endif
458
c4582f93
MR
459#ifdef SNPRINTF_RETURNS_BOGUS
460#define snprintf git_snprintf
461extern int git_snprintf(char *str, size_t maxsize,
462 const char *format, ...);
463#define vsnprintf git_vsnprintf
464extern int git_vsnprintf(char *str, size_t maxsize,
465 const char *format, va_list ap);
466#endif
467
726c8ef5
JS
468#ifdef __GLIBC_PREREQ
469#if __GLIBC_PREREQ(2, 1)
470#define HAVE_STRCHRNUL
137c6eaa 471#define HAVE_MEMPCPY
726c8ef5
JS
472#endif
473#endif
474
475#ifndef HAVE_STRCHRNUL
659c69cf 476#define strchrnul gitstrchrnul
9e79f00f
AE
477static inline char *gitstrchrnul(const char *s, int c)
478{
479 while (*s && *s != c)
480 s++;
481 return (char *)s;
482}
659c69cf
RS
483#endif
484
137c6eaa
JN
485#ifndef HAVE_MEMPCPY
486#define mempcpy gitmempcpy
487static inline void *gitmempcpy(void *dest, const void *src, size_t n)
488{
489 return (char *)memcpy(dest, src, n) + n;
490}
491#endif
492
da523cc5
MP
493#ifdef NO_INET_PTON
494int inet_pton(int af, const char *src, void *dst);
495#endif
496
497#ifdef NO_INET_NTOP
498const char *inet_ntop(int af, const void *src, char *dst, size_t size);
499#endif
500
d1efefa4 501extern void release_pack_memory(size_t, int);
97bfeb34 502
851c34b0
JS
503typedef void (*try_to_free_t)(size_t);
504extern try_to_free_t set_try_to_free_routine(try_to_free_t);
a9a74636 505
112db553
LT
506extern char *xstrdup(const char *str);
507extern void *xmalloc(size_t size);
5bf9219d 508extern void *xmallocz(size_t size);
112db553
LT
509extern void *xmemdupz(const void *data, size_t len);
510extern char *xstrndup(const char *str, size_t len);
511extern void *xrealloc(void *ptr, size_t size);
512extern void *xcalloc(size_t nmemb, size_t size);
513extern void *xmmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
514extern ssize_t xread(int fd, void *buf, size_t len);
515extern ssize_t xwrite(int fd, const void *buf, size_t len);
516extern int xdup(int fd);
517extern FILE *xfdopen(int fd, const char *mode);
518extern int xmkstemp(char *template);
463db9b1 519extern int xmkstemp_mode(char *template, int mode);
6e180cdc
JH
520extern int odb_mkstemp(char *template, size_t limit, const char *pattern);
521extern int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1);
f21a47b2 522
dc49cd76
SP
523static inline size_t xsize_t(off_t len)
524{
46be82df
TR
525 if (len > (size_t) len)
526 die("Cannot handle files this big");
dc49cd76
SP
527 return (size_t)len;
528}
529
5bb1cda5 530static inline int has_extension(const char *filename, const char *ext)
83a2b841 531{
5bb1cda5
RS
532 size_t len = strlen(filename);
533 size_t extlen = strlen(ext);
83a2b841
RS
534 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
535}
536
f1589d10
RJ
537/* in ctype.c, for kwset users */
538extern const char tolower_trans_tbl[256];
539
4050c0df 540/* Sane ctype - no locale, and works with signed chars */
c2e9364a 541#undef isascii
4050c0df
JH
542#undef isspace
543#undef isdigit
544#undef isalpha
545#undef isalnum
0fcec2ce 546#undef isprint
43ccdf56
NK
547#undef islower
548#undef isupper
4050c0df
JH
549#undef tolower
550#undef toupper
1c149ab2
NTND
551#undef iscntrl
552#undef ispunct
553#undef isxdigit
2adf7247 554
ca5ab7d1 555extern const unsigned char sane_ctype[256];
4050c0df
JH
556#define GIT_SPACE 0x01
557#define GIT_DIGIT 0x02
558#define GIT_ALPHA 0x04
8cc32992 559#define GIT_GLOB_SPECIAL 0x08
f9b7cce6 560#define GIT_REGEX_SPECIAL 0x10
2f6c9760 561#define GIT_PATHSPEC_MAGIC 0x20
1c149ab2
NTND
562#define GIT_CNTRL 0x40
563#define GIT_PUNCT 0x80
4050c0df 564#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
c2e9364a 565#define isascii(x) (((x) & ~0x7f) == 0)
4050c0df
JH
566#define isspace(x) sane_istest(x,GIT_SPACE)
567#define isdigit(x) sane_istest(x,GIT_DIGIT)
568#define isalpha(x) sane_istest(x,GIT_ALPHA)
569#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
0fcec2ce 570#define isprint(x) ((x) >= 0x20 && (x) <= 0x7e)
43ccdf56
NK
571#define islower(x) sane_iscase(x, 1)
572#define isupper(x) sane_iscase(x, 0)
8cc32992 573#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
f9b7cce6 574#define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL)
1c149ab2
NTND
575#define iscntrl(x) (sane_istest(x,GIT_CNTRL))
576#define ispunct(x) sane_istest(x, GIT_PUNCT | GIT_REGEX_SPECIAL | \
577 GIT_GLOB_SPECIAL | GIT_PATHSPEC_MAGIC)
578#define isxdigit(x) (hexval_table[x] != -1)
4050c0df
JH
579#define tolower(x) sane_case((unsigned char)(x), 0x20)
580#define toupper(x) sane_case((unsigned char)(x), 0)
2f6c9760 581#define is_pathspec_magic(x) sane_istest(x,GIT_PATHSPEC_MAGIC)
4050c0df
JH
582
583static inline int sane_case(int x, int high)
584{
585 if (sane_istest(x, GIT_ALPHA))
586 x = (x & ~0x20) | high;
587 return x;
588}
589
43ccdf56
NK
590static inline int sane_iscase(int x, int is_lower)
591{
592 if (!sane_istest(x, GIT_ALPHA))
593 return 0;
594
595 if (is_lower)
596 return (x & 0x20) != 0;
597 else
598 return (x & 0x20) == 0;
599}
600
6aead43d
JM
601static inline int strtoul_ui(char const *s, int base, unsigned int *result)
602{
603 unsigned long ul;
604 char *p;
605
606 errno = 0;
607 ul = strtoul(s, &p, base);
608 if (errno || *p || p == s || (unsigned int) ul != ul)
609 return -1;
610 *result = ul;
611 return 0;
612}
613
7791ecbc
JH
614static inline int strtol_i(char const *s, int base, int *result)
615{
616 long ul;
617 char *p;
618
619 errno = 0;
620 ul = strtol(s, &p, base);
621 if (errno || *p || p == s || (int) ul != ul)
622 return -1;
623 *result = ul;
624 return 0;
625}
626
43fe901b
BD
627#ifdef INTERNAL_QSORT
628void git_qsort(void *base, size_t nmemb, size_t size,
629 int(*compar)(const void *, const void *));
630#define qsort git_qsort
631#endif
632
81a24b52
AR
633#ifndef DIR_HAS_BSD_GROUP_SEMANTICS
634# define FORCE_DIR_SET_GID S_ISGID
635#else
636# define FORCE_DIR_SET_GID 0
637#endif
638
c06ff490
KB
639#ifdef NO_NSEC
640#undef USE_NSEC
641#define ST_CTIME_NSEC(st) 0
642#define ST_MTIME_NSEC(st) 0
643#else
c567383b
BG
644#ifdef USE_ST_TIMESPEC
645#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec))
646#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec))
647#else
c06ff490
KB
648#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec))
649#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec))
650#endif
c567383b 651#endif
c06ff490 652
34779c53
JS
653#ifdef UNRELIABLE_FSTAT
654#define fstat_is_reliable() 0
655#else
656#define fstat_is_reliable() 1
657#endif
658
ab8632ae 659#ifndef va_copy
26db0f2e
JN
660/*
661 * Since an obvious implementation of va_list would be to make it a
662 * pointer into the stack frame, a simple assignment will work on
663 * many systems. But let's try to be more portable.
664 */
665#ifdef __va_copy
666#define va_copy(dst, src) __va_copy(dst, src)
667#else
668#define va_copy(dst, src) ((dst) = (src))
669#endif
ab8632ae
JK
670#endif
671
fc71db39
AR
672/*
673 * Preserves errno, prints a message, but gives no warning for ENOENT.
674 * Always returns the return value of unlink(2).
675 */
676int unlink_or_warn(const char *path);
d1723296
PC
677/*
678 * Likewise for rmdir(2).
679 */
680int rmdir_or_warn(const char *path);
80d706af
PC
681/*
682 * Calls the correct function out of {unlink,rmdir}_or_warn based on
683 * the supplied file mode.
684 */
685int remove_or_warn(unsigned int mode, const char *path);
fc71db39 686
e5c52c98
JN
687/*
688 * Call access(2), but warn for any error except "missing file"
689 * (ENOENT or ENOTDIR).
690 */
ba8bd830 691int access_or_warn(const char *path, int mode);
96b9e0e3 692int access_or_die(const char *path, int mode);
ba8bd830 693
55b38a48
JH
694/* Warn on an inaccessible file that ought to be accessible */
695void warn_on_inaccessible(const char *path);
696
2f705875
JK
697/* Get the passwd entry for the UID of the current process. */
698struct passwd *xgetpwuid_self(void);
699
4050c0df 700#endif